clean_title_page.html

<style>
  .hide {
    display: none !important;
  }
</style>


<script>
  function remove() {
    let footer = document.querySelector('div.footer');
    let slideNo = document.querySelector('div.slide-number');
    slideNo.classList.add('hide');
    footer.classList.add('hide');
  
    Reveal.on('slidechanged', event => {  
      if(Reveal.isFirstSlide()) {
        slideNo.classList.add('hide');
        footer.classList.add('hide');
      } else {
        slideNo.classList.remove('hide');
        footer.classList.remove('hide');
      }
    });

	Reveal.addEventListener('ready', (event) => {
            if (event.indexh === 0) {
              document.querySelector("div.slide-menu-button").style.display = "none";
            } else {
              document.querySelector("div.slide-menu-button").style.display = "block";
            }
          });
          Reveal.addEventListener('slidechanged', (event) => {
            if (event.indexh === 0) {
              document.querySelector("div.slide-menu-button").style.display = "none";
            } else {
              document.querySelector("div.slide-menu-button").style.display = "block";
            }
          });
  }
  
  window.onload = remove();
</script>